TWmiOs Component For Delphi, C++Builder

TWmiOs is a part of WmiSet Component Collection for Delphi, C++Builder. This VCL component returns over 60 different settings of local or remote operating system. The component is also capable of changing date and time on a remote computer (Windows XP and higher), rebooting network computers, changing recovery settings. This is typical scenario of using the component:

Connect to the destination computer;
Read or change OS settings.
Disconnect.

The following code demonstrates this scenario. The code assumes that the component was dropped on the form at design time.

procedure TForm1.PerformTask;
begin
  WmiOs1.Credentials.UserName := 'DOMAIN\Administrator';
  WmiOs1.Credentials.Password := 'mypassword';
  // computer name will also work
  WmiOs1.MachineName := '10.8.26.76'; 
  WmiOs1.Active := true;
  // synchronize the time on remote Windows XP
  try
    WmiOs1.LocalDateTime := Now;

    // do something else
  finally
    WmiOs.Active := false;
  end;
end;

The first two lines are required only if current user does not have access to destination computer. The third line may be omitted when connecting to local computer. The following properties are supported, though some of them may return empty values under different Windows operating systems:

Property

Description

BootDevice	Returns name of the boot disk drive, for example: "\Device\HarddiskVolume1".
BuildNumber	Returns the build number of an operating system. For example, Windows XP may return "2600".
BuildType	Returns a text indication of build type, for example "retail build", "checked build", "Uniprocessor Free".
Caption	Returns short description of operating system, for example, "Microsoft Windows XP Professional".
CodeSet	Returns code page value an operating system uses, for example "1252".
CountryCode	Returns the code for the country/region of an operating system.
CSDVersion	Returns the description of the latest service pack installed on a computer system.
CSName	Returns the name of computer system.
CurrentTimeZone	Returns the offset of local time from Greenwich mean time (GMT).
Debug	Indicates if the operating system is a checked (debug) build.
Description	Returns the description of the Windows operating system, which is visible in the network browser.
Distributed	Indicates if the operating system is distributed (cluster environment)
EncryptionLevel	Returns the encryption level for secure transactions: 0-bit, 128-bit, 168-bit or n-bit.
ForegroundApplicationBoost	Controls the priority given to the foreground application.
FreePhysicalMemory	Returns size unused physical memory.
FreeSpaceInPagingFiles	Returns a free space in the operating system paging file.
FreeVirtualMemory	Returns size of unused virtual memory.
InstallDate	Returns the date when an operating system was installed.
LargeSystemCache	Indicates how an operating system optimizes the memory.
LastBootUpTime	Indicates when the operating system was last booted.
LocalDateTime	Returns operating system's local time.
Locale	Indicates the language used by operating system.
LocalTimeZone	Returns the time zone of the LocalDateTime
Manufacturer	Returns the name of operating system manufacturer.
MaxNumberOfProcesses	Returns the maximum number of process the operating system can support.
MaxProcessMemorySize	Indicates the maximum amount of memory that may be allocated to a process.
NumberOfLicensedUsers	Returns number of user licenses for the operating system.
NumberOfProcesses	Returns a number of currently running processes.
NumberOfUsers	Returns current number of user sessions.
Organization	Returns name of the company used when registering operating system.
OSLanguage	Returns the language version of the operating system, for example 409 for English (United States).
OSName	Returns name and location of operating system on the computer, for example "Microsoft Windows XP Professional\|C:\WINDOWS\|\Device\Harddisk0\Partition3".
OSProductSuite	Returns additional products on the operation system.
OSType	Returns the type of operating system.
QuantumLength	Controls the number of clock ticks per quantum.
QuantumType	Controls the type of the quantum length.
QuickFixes	Returns a list of updates applied to operating system.
Recovery	Defines how system behaves after crash.
AutoReboot	Defines if the operating system automatically reboots after crash.
DebugFilePath	Defines the path to the debug file, for example %SystemRoot%\MEMORY.DMP.
DebugInfoType	Defines the type of debugging information written to the log file.
ExpandedDebugFilePath	Returns expanded version of DebugFilePath, for example C:\WINDOWS\MEMORY.DMP
ExpandedMiniDumpDirectory	Returns expanded version of the MiniDumpDirectory property, for example C:\WINDOWS\Minidump.
KernelDumpOnly	Specifies if only kernel debug information should be written to the debug log file.
OverwriteExistingDebugFile	Specifies if the new log file will overwrite an existing one.
SendAdminAlert	Indicates if alert message should be sent in the event of an operating system failure.
WriteDebugInfo	Specifies if debugging information is to be written to a log file.
WriteToSystemLog	Specifies if the events will be written to a system log.
RegisteredUser	Returns the name of the registered user of the operating system.
SerialNumber	Returns serial number of the operating system.
ServicePackMajorVersion	Returns the major version number of the installed service pack.
ServicePackMajorVersion	Returns the minor version number of the installed service pack.
SizeStoredInPagingFiles	Returns the size of data that can be stored in the paging file.
Status	Returns the current status of the operating system.
SuiteMask	Indicates the product suites available on the system, for example Back Office, Terminal, Enterprise etc.
SystemDevice	Returns the physical disk partition on which the operating system is installed, for example "\Device\HarddiskVolume3"
SystemDirectory	Returns system directory of operating system, for example "C:\WINDOWS\SYSTEM32"
SystemDrive	Returns the disk drive where operating system is installed, for example "C:"
TotalSwapSpaceSize	Returns size of the swap file.
TotalVirtualMemorySize	Returns total size of virtual memory.
TotalVisibleMemorySize	Returns the size of physical memory available for operating system.
Version	Returns version of the operating system, for example "4.0" or "5.1.2600".
WindowsDirectory	Returns the directory of the operating system, for example "C:\WINDOWS".

The WmiSet collection comes with example that demonstrates how to use TWmiOs component. The example is build as OS Viewer that connects to remote PCs to view/modify operating system settings. Click here to download the compiled executable.